Removing log upload from Publish To MyGet job

Publish To MyGet job will only restore and call `dotnet nuget push` which won't generate any logs. For this reason, we don't need to have the property of the automatic log publishing step.

.vsts-ci.yml

@@ -246,7 +246,6 @@ jobs:
       displayName: Publish To MyGet
       continueOnError: true
       enableTelemetry: $(_enableTelemetry)
-      enablePublishBuildArtifacts: true
       helixRepo: dotnet/iot
       strategy:
         matrix: